Pulmonary Arterial Hypertension (PAH) is a progressive vascular disorder defined by increased Pulmonary Vascular Resistance (PVR), which leads to Right Ventricular (RV) dysfunction and ultimately Right Heart Failure (RHF). Rohit Masih and colleagues, in The Open Respiratory Medicine Journal, highlight the severe and life-threatening nature of acute decompensated RV failure in patients with PAH. Acute…